How many movies have G. D. Spradlin and George R. Nelson collaborated on?

They have worked on 4 movies together! Their first movie together was Zabriskie Point (1970) while their highest rated movie together was The Godfather 1901–1959: The Complete Epic (1981). They have not worked together since The Godfather 1901–1959: The Complete Epic (1981). They are most known for their drama films together.